Just got an email moments ago (5pm CST) stating the following:
"I have received word from my company that AT&T reports there is a RIM outage that is affecting 20% of west coast BlackBerry users. RIM is working this issue. Just wanted to let you guys know."
I checked Data Outages but didn't see anything reported there yet, but figured I'd better post this. I did see the company she was working for (big one!) so I'm guessing she is talking that both BES and BIS may be affected in this 20% number (considering this info is coming via AT&T).